I also use Home/End a lot while writing code, and interestingly (at least to me!) I've become totally accustomed to using the Fn+arrows. It's like having to hit

I also use Home/End a lot while writing code, and interestingly (at least to me!) I've become totally accustomed to using the Fn+arrows. It's like having to hit Shift to type curly braces and other common symbols—it became completely automatic and subconscious after a while.